Very good but a bit overrated morphology

Bought on the seller's site because cheaper.
For starters, this mattress is of good quality, the structure is solid metal, the slats are painted in classic wood and secured correctly. Everything is done with.
Then what does the morphological side?
Difficult to estimate because the perception will also strongly depend on your mattress, box spring being just one element.
Here the difference lies simply in a pair of double-slats in the center to hold the more firmly basin and three others slightly recessed slats above for more flexibility towards the shoulders.
Short little tricks that do not cost very dear.
Result: I did not notice any difference with my old revolutionary (though well worn), the overall comfort is firm enough, it actually feels a harder support on the basin but above, difficult to see a difference.
In short, I have no more or less back pain than before
In conclusion comfort is good and probably greater than a basic box spring, already due to its quality, but it will not take morphological miracle, despite higher prices.
Note that the slats are standard and easily replaceable in case of breakage, even morphological slats are nested in a standard format so as replaceable by standard slats